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International Journal of Spectroscopy
Volume 2016 (2016), Article ID 8543475, 7 pages
Research Article

External Quantum Efficiency Improvement with Luminescent Downshifting Layers: Experimental and Modelling

1School of Engineering, Trinity College Dublin, Dublin, Ireland
2Dublin Energy Lab, Dublin Institute of Technology, Dublin, Ireland

Received 7 October 2015; Accepted 15 December 2015

Academic Editor: Akihide Wada

Copyright © 2016 H. Ahmed et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Core-shell quantum dots CdSe/ZnS and lumogen yellow organic dye are characterized by their inclusion in luminescent downshifting (LDS) layers. Layers were deposited on top of crystalline silicon cell (c-Si), dye synthesized solar cell (DSSC), and cadmium telluride (CdTe) minimodules. External quantum efficiency measurements for the solar cell/LDS devices are discussed. Experimental results were compared with an optical model developed by Rothemund, 2014.